AP Bio - Molecular Refresher

Front

What is the term for the process by which DNA replicates, producing one new strand and one template strand?

Back

Semiconservative

Front

Which enzyme is NOT involved in DNA replication?

Back

RNA Polymerase

Front

What are the protective, noncoding DNA sequences at the ends of chromosomes called?

Back

Telomeres

Front

Which bases pair correctly in DNA?

Back

Guanine pairs with Cytosine (a Pyrimidine).

Front

In DNA replication, in which direction is the DNA read and built?

Back

DNA is read 3' to 5' and built 5' to 3'.

Front

What is the role of helicase in DNA replication?

Back

Helicase unwinds the DNA double helix.

Front

What are Okazaki fragments?

Back

Short segments of DNA synthesized on the lagging strand during DNA replication.

Front

What is the function of DNA ligase?

Back

DNA ligase joins Okazaki fragments together to create a continuous DNA strand.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.

Front

What is the significance of the 5' and 3' ends of a DNA strand?

Back

They indicate the directionality of the DNA strand, crucial for replication and transcription.